Always crushing your training partners during rolls may help build up a game plan for yourself for upcoming tournaments, but that kind of practice should not always be the norm.
When you do this, your less experienced training partners may not have an opportunity to learn/improve their mistakes.
It is important to first correct any bad habits they are doing (such as trying to complete a guillotine choke even when their guard is passed), and forcing them to drill/use a good technical movement from the position.
The rolls with novices can also be used to practice parts of YOUR game that you are uncomfortable with, because even if you make a mistake you probably won't get punished too badly.
Now an amazing sweep combination from Andre Galvao